GTA5 is the fastest-selling title to break the three million barrier in the UK and has already overtaken lifetime sales of last year's Call of Duty: Black Ops 2.

Next to beat is last year's FIFA 13, whose sales total GTA5 is expected to best within the next few days.

Worldwide, the game generated a total of $1 billion in revenue in just three days, making it the fastest-selling entertainment launch in history. Rockstar has yet to disclose the game's overall sales total.